Peanut-butter grinder.



A. P. G-ROHENS.

PEANUT BUTTER GRINDER.

APPLICATION FILED JAN- 4. l9l6. 1 187361 9, Patented June 20, 1916.

2 shins-shin 1.

A. P. GROHENS.

PEANUT BUTTER GRINDER. APPLICATION FILED JAN. 4. 1916'.

1 ,1 87,619. Patented June 20; 1916.

2 SHEETS-SHEET 2'.

,2? 21 2 6 c? 26 f 54 z;- V

ALBERT I. GROHENS, OF MARSHALL, MICHIGAN.

PEANUT-BUTTER GRINDER.

Specification of Letters Patent.

Patented June 20, 1916.

Application filed January 4, 1916. Serial No. 70,278.

To all whom it may concern:

Be it known that I, ALBERT P. GnoHnNs, a citizen of the United States of America, residing at Marshall, in the county of Callioun and State of Michigan, have invented certain new and useful Improvements in Peanut-Butter Grinders, of which the following is a specification, reference being had therein to the accompanying drawlng.

This invention relates to improvements in mills and has for its object the production of a simple and efiicient means for grinding nuts into butter or smooth paste.

Another object of this invention is the production of a simple and efiicient means which will feed the nut meats to spirally constructed grinding burs whereby the nut meats will be pressed and thoroughly ground to a paste-like form.

With these and other objects in view this invention consists of certain novel combinations, constructions, and arrangements of parts as will be hereinafter fully described and claimed.

' In the accompanying drawings :Figure 1 is a side elevationof the grinding mill. Fig. 2 is a central longitudinal section therethrough, the feeding spiral and grinding burs being removed therefrom. Fig. 3 is a central longitudinal section through the machine showing the feeding spiral and' grinding burs placed therein. Fig. 4 is an end view of the machine looking at the dis charge end thereof. Fig. 5 is a section taken on line 5-5, of Fig. 3 looking in the direction of the arrow. Fig. 6 is a section taken on line 6-6, of Fig. 3. Fig. 7 is a side elevation of the primary or male grinding bur. Fig. 8 is a front elevation of the innor end of the male grinding bur. Fig. 9 is a vertical section through the auxiliary or female grinding bur. Fig. 10 is a side elevation of the locking nut or plate.

By referring to the drawings it will be seen that 1 designates the supporting standard which may be secured to a suitable support in any desired manner, and a casing or body 2 is carried by the supporting standard 1. This body 2 is provided with a feeding hopper 3 at the top thereof for permitting or allowing the meats of the nuts to be dumped therein for feeding the nuts to the conveyer spiral or screw 4. The casing 2 is provided with a projecting neck portion 5, through which neck portion is journaled one end 6 of the spiral or feeding screw 4. A pulley 7 or other suitable driving means may be secured to the outer end of the spiral screw or feeding screw 4 as illustrated in Fig. 1 for the purpose of rotating the same in the desired manner. The hopper 3 is provided with an inclined partition or bottom 8 for directing the meats of the nuts discharged into the hopper to the desired opening 9 formed in the bottom of the hopper which communicates with the longitudinally extending passageway 10 formed in the body 2. The longitudinally extending passageway 10 formed in the body 2 is provided with spiral rib portions 11, which rib portions are adapted to be engaged by the spiral ribs 12 formed upon the spiral or feeding screw 4. The construction of the spiral ribs 11 is clearly illustrated in Fig. 2, whereas the construction of the spiral rib portions 12 is clearly illustrated in Fig. 3.

The body 2 of the mill is provided with a flared discharge end 13, which flared discharge end 13 is provided with a spaced wall portion 14 constituting a water jacket 15. The water jacket 15 is provided with a water entrance aperture 16 upon the top thereof, and a water discharge aperture 17 upon the bottom thereof for the purpose of permitting cooling water to pass therethrough, and thereby keep the flared portion 13 of the body 2 cool while the machine is in operation.

The flared portion 13 is provided with a shoulder seat 18 and an inner seat 19. A female grinding bur 20 is placed within the flared end 13, and has its flange portions 21 and 22 fitting upon the shoulder" portions 18 and 19 respectively. The female grinding bur 20 is provided near the inner end thereof with elongated substantially conical shaped notches 23 formed therein tapering toward the inner portion of the grinding bur 20. These notches 23 will constitute an efficient means for feeding the meats of the nuts into the grinding face I of the bur 20. As illustrated clearly in Fig. 9 it will be seencthat the female grinding bur 20 is provided with a plurality of circular grooves 24 extending around the entire inner face of the bur 20, and is also provided with a plurality of radiating longitudinally extending grooves 25 extending substantially at right angles to the grooves 24, thereby producing an eflicient grinding face for thoroughly mashing the meats of the inale grinding bur 26 as clearly illustrated in Fig. '3. The male grinding bur 26 is tapered toward its inner end so as to fit snugly in engagement with the inner face of the female grinding bur 20. The bur 26 is provided with a plurality -0f tapering notches 28 extending'at a tangent to the central axis of the bur and producing ,a substantially spiral-like series of tapering notches. These notches 28 taper toward the inner ends thereof so as to feed the meats of the nut toward the grinding face of the bur. The bur 26 is also provided {with a plurality of diverging notches 29 communicating with the notches 28, which notches 29 extend at an angle to the side edges of the notches 28. These notches 29 will constitute means for facilitating the dischargingof the meats of the nut to the grinding face of the burs 26 and 20. The bur 26 is provided with a plurality of circular grooves 30 as illustrated in Fig. 7, and is also provided with a plurality of longitudinally extending grooves 31, which grooves3l extend at substantially right angles to the grooves 30 as illustrated in Fig. 7 of the drawings, thereby producing an eificient grinding face upon the outer portion of the bur which is adapted to fit snugly in engagement with the inner face of the bur 20 as clearly illustrated in Fig. 3 of the drawings.

The outer end of the spiral 4 is provided with a threaded extension '32, upon which threaded extension 32 is mounted a lock nut 33. This lock nut 33 is provided with a plurality of sockets '34, within which is adapted to fit a wrench for the purpose of tightening or loosening the nut 33. This nut 33 comprises an elongated plate, which elongated plate is provided also with angularly extending beveled edges 35, the beveled edges 35 partially overhanging the adjoining faces 36 of the burs 20 and 26. It will, therefore, be seen that the nut 33 will constitute a means for not only holding the burs 20 and 26 in proper position, but will also constitute a means for cleaning the edges of the burs from the butter which Copies of this patent may be obtained for versely has been formed by grinding the meats of the nuts passed longitudinally of the casing 2 by means of the feeding screw or spiral l.

From experience it has been found that in order to secure a thorough emulsification of the oils of the nuts, it is necessary to force the feed of the kernels or nutmeats by means of a conveying screw through a casing provided with spiral grooves as clearly illustrated in Fig. 3, and finally force the meats of the nuts through the grinding cones as illustrated which are so out with grooves as to cause the nuts to be evenly and constantly fed through or between the grinding faces of the grinding burs.

It should be understood that the circumferential and longitudinal grooves may be cut at any desired angle with respect to each other without departing from the spirit of the invention. P

Having thus described the invention what is claimed as new, is p 1'. A machine of the class described comprising a body, feeding means positioned therein, grinding burs carried by said' body, a trimming knife, said trimming knife comprising an elongated body, means for anchoring said trimmingknife upon said burs, and said trimming knife provided with diagonally extending cutting edges adaptedto pass over the adjoining'faces of said burs for cleaning material from the outer faces of said burs.

2. a grinding machine of the class described comprising a casing, a feeding mechanism for said casing, an inner grinding bur, an outer grinding bur, said inner-and outer grinding burs provided with transand circumferentially extending grooves formed upon the abutting faces thereof, notches formed in said outer. bur

to facilitate the feeding of material to the grinding faces of said bur, said inner bur provided with feeding notches extending at an angle to the longitudinally extending grooves formed in the grinding face of said inner bur, and said inner bur also provided with elongated notches radiating from one side of said feeding grooves of said inner bur and extending at an angle to the side edge of said feeding grooves of said inner bur for facilitating the directing of material upon the grinding faces of said burs.

In testimony whereof I hereunto afiix my signature.

ALBERT P. GROHENS.

five cents each, by addressing the Commissioner of Patents.

Washington, D. C. e 

